Authentication - ProWebLook API

Overview

Every request to the ProWebLook API must include a valid API key. Authentication is performed via a query parameter or request body field named api_key.

Keep your API key confidential. Do not expose it in client-side code, public repositories, or logs.

Passing Your API Key

You can pass the API key in two ways:

Query Parameter (GET)
Request Body (POST)

Append api_key as a URL query parameter:

curl "https://lookup.proweblook.com/api/v1/phonevalidation?phone_number=%2B14155552671&api_key=YOUR_API_KEY"

Include api_key in a JSON or form body:

curl -X POST "https://lookup.proweblook.com/api/v1/phonevalidation" \
  -H "Content-Type: application/json" \
  -d '{
    "phone_number": "+14155552671",
    "api_key": "YOUR_API_KEY"
  }'

Error Responses

HTTP Status	Code	Meaning
`401`	`Invalid API key.`	The provided `api_key` does not match any registered user.
`402`	`Insufficient * API credits.`	Your credit balance for the requested service has been exhausted.
`400`	Various	Missing or invalid parameters.

Example: Invalid API Key

{
  "error": "Invalid API key."
}

Example: Insufficient Credits

{
  "error": "Insufficient phone API credits."
}

Getting Your API Key

Sign up or log in at proweblook.com
Navigate to Dashboard → API Keys
Copy your key and store it securely (e.g., in an environment variable)

# Best practice: use environment variables
export PROWEBLOOK_API_KEY="your_api_key_here"
curl "https://lookup.proweblook.com/api/v1/balance?service=phonevalidation&api_key=$PROWEBLOOK_API_KEY"